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arXiv 1008.4645hep-ph
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非微扰夸克海不对称性

Nonperturbative Quark Sea Asymmetries

Harleen Dahiya, Neetika Sharma

摘要:

研究了非微扰产生的"夸克海“效应,以确定八重态重子的味结构。手征组分夸克模型($χ$ CQM),这是已知的质子自旋和相关问题的非微扰制度提供了令人满意的解释,能够解释所需数量的夸克海的定性产生。通过唯象地将Bjorken标度变量$x$包含在海夸克分布函数中,研究了在不同的标度变量值下夸克海的重要性.八重态重子的$\bar d(x)-\bar u(x)$、$\bar d(x)/\bar u(x)$和Gottfried积分等夸克海不对称性的结果在较低的$x$值下加强了夸克海的意义。

英文摘要:

The effects of nonperturbatively generated ``quark sea'' have been investigated to determine the flavor structure of the octet baryons. The chiral constituent quark model ($χ$CQM), which is known to provide a satisfactory explanation of the proton spin and related issues in the nonperturbative regime, is able to explain the qualitative generation of the requisite amount of quark sea. The importance of quark sea has been studied at different values of the Bjorken scaling variable $x$ by including it phenomenologically in the sea quark distribution functions. The results for the quark sea asymmetries like $\bar d(x)-\bar u(x)$, $\bar d(x)/\bar u(x)$ and Gottfried integral for the octet baryons strengthen the significance of quark sea at lower values of $x$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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